Asus PCI-DA2100 User Manual - Page 21

Concurrent Rebuild in RAID 0+1

Page 21 highlights

3 Manual Rebuild When a user applies forced-manual rebuild, the controller will first check whether there is any Local Spare Drive assigned to this logical drive. If yes, it will automatically start to rebuild. If there is no Local Spare Drive available, the controller will search for a Global Spare Drive. If there is a Global Spare Drive, it will automatically rebuild the logical drive. User applies forced-manual rebuild Any Local Spare Drive assigned to this logical drive? Yes Rebuild using the Local Spare Drive No Any Global Spare Drive assigned to this logical drive? Yes Rebuild using the Global Spare Drive No Has the failed drive been replaced? Yes Rebuild using the replaced drive No Wait for manual rebuild If neither a Local Spare Drive nor a Global Spare Drive is available, the controller will detect the SCSI channel and ID of the failed drive. Once the failed drive has been replaced by a new drive/used drive, it starts to rebuild using the replaced drive. If there is no available drive for rebuilding, the controller will not try to rebuild again until the user applies another forced-manual rebuild. 3.2.4 Concurrent Rebuild in RAID (0+1) RAID (0+1) allows multiple drive failure and concurrent multiple drive rebuild. Newly replaced drives must be scanned and set as Local Spare Drives. These drives will be rebuilt at the same time (you do not need to repeat the rebuilding process for each drive). ASUS PCI-DA2100/PCI-DA2200 User's Manual 21

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3
21
ASUS PCI-DA2100/PCI-DA2200 User’s Manual
Manual Rebuild
When a user applies forced-manual rebuild, the controller will first
check whether there is any Local Spare Drive assigned to this logical
drive. If yes, it will automatically start to rebuild.
If there is no Local Spare Drive available, the controller will search
for a Global Spare Drive. If there is a Global Spare Drive, it will
automatically rebuild the logical drive.
User applies
forced-manual
rebuild
Any
Local Spare Drive
assigned to this
logical drive?
Yes
Yes
Rebuild using the
Local Spare Drive
Any
Global Spare Drive
assigned to this
logical drive?
Rebuild using the
Global Spare Drive
No
No
Wait for
manual rebuild
Yes
Has the failed drive
been replaced?
Rebuild using the
replaced drive
No
If neither a Local Spare Drive nor a Global Spare Drive is available,
the controller will detect the SCSI channel and ID of the failed drive.
Once the failed drive has been replaced by a new drive/used drive, it
starts to rebuild using the replaced drive. If there is no available
drive for rebuilding, the controller will not try to rebuild again until
the user applies another forced-manual rebuild.
3.2.4
Concurrent Rebuild in RAID (0+1)
RAID (0+1) allows multiple drive failure and concurrent multiple
drive rebuild. Newly replaced drives must be scanned and set as
Local Spare Drives. These drives will be rebuilt at the same time (you
do not need to repeat the rebuilding process for each drive).